Why is thermometer kept under tongue while taking temperature?

There are a few reasons why a thermometer is kept under the tongue while taking temperature.

1. Accuracy: The mouth is one of the most accurate places to measure body temperature. This is because the mouth is close to the brain and other vital organs, which means that the temperature reading will be more reflective of the body's overall temperature.

2. Convenience: Keeping the thermometer under the tongue is a convenient way to take someone's temperature. This is especially important for people who are sick or elderly and may have difficulty keeping a thermometer in their armpit or rectum.

3. Comfort: Keeping the thermometer under the tongue is also more comfortable than other methods of taking temperature. This is because the mouth is a relatively sensitive area, and the thermometer will not cause any discomfort.

4. Safety: Keeping the thermometer under the tongue is also a safe way to take temperature. This is because the thermometer will not come into contact with any other parts of the body, which could potentially cause infection.

It is important to note that keeping the thermometer under the tongue is not always the best way to take someone's temperature. For example, if someone is having trouble breathing, it may be better to take their temperature in their armpit or rectum. However, for most people, keeping the thermometer under the tongue is the best way to take an accurate and comfortable temperature reading.